Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio results

Contrast ratio 699:1
Monitor model
Submitted 30 May 2018 00:02 CEST, by 90.228.*.*
Camera model Canon EOS 1000D
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 8.5 s (Set EV to +3.1)
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/83 s (Set EV to +2.3)

Black
Screen photo
[open image]
Luminance 0.07 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –5.58 stops   (aim for –2 to –3)
Exposure spread 0.65 stops
Area used for calculation 0.607 x 0.684
Camera settings Exposure time: 1   ISO: 400   F-number: 4
Focal length: 43.7 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 50 cd/m2
Luminance spread 23 cd/m2 (2 standard deviations)
Exposure value –4.76 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 0.607 x 0.684
Camera settings Exposure time: 1/395   ISO: 400   F-number: 4
Focal length: 43.7 mm   (35 mm equivalent)
Exposure compensation: 0

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.